Steam-heater.



Nu..674,257. Patented May I4, I90! E. G T. CULLES.

STEAM HEATER.

(Application filed Sept. 8, 1899.

(| lo Model.)

m: NORRIS PETERS ca, Puma-unto" WASHINGTON. u. c.

PATET Fries.

EDWARD G. T. COLLES, OF CHICAGO, ILLINOIS.

STEAM-H EATER.

SPECIFICATION forming part of Letters Patent No. 674,257, dated May 14,1901.

Application filed September 8, 1899. Serial No. 729,819. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD G. T. OoLLEs, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Steam-Heaters, of whichthe following is a full, clear, and exact specification.

My invention relates to steam-heaters for heating juice and other liquidwithout pressure; and it has for one object to provide a heater ofsimple, efficient, and inexpensive construction.

Another object of my invention is to provide a heater of improvedconstruction in which the tubes are capable of moving under expansionand contraction without straining or loosening any of the joints.

A further object of the invention is to provide a heater so constructedthat the flow of the liquid through the tubes will be rapid, therebypreventing to a large extent scaleforming substances from coating theheatingsurfaces.

With these ends in view my invention consists in certain features ofnovelty in the construction, combination, and arrangement of partsbywhich the said objects and certain other objects hereinafter appearingare attained, all as fully described, with reference to the accompanyingdrawings, and more particularly pointed out in the claims.

In the said drawings, Figure 1 is a vertical sectional view of a heaterconstructed according to my improvements. Fig. 2 is a transverse or plansection taken on the line 2 2, Fig. 1. Fig. 3 is an enlarged detailsection showing the parts at the lower end of Fig. 1.

In carrying out my invention I employ a shell 1, which is preferablycylindrical and stands upright, if desired, on suitable legs or supports2. In the upper end of the shell 1, on one side, is formed an exit 3 forthe juice or other liquid to be heated, and just below this exit 3 issecured a flue-sheet 4, into which the upper ends of a series of fluesor tubes 5 are secured and from which they hang pendent. The upper endof the shell 1 is provided with a compartment or chamber 31, which iscommon to all of the tubes 5. The lower ends of the tubes 5 are securedin a flue-sheet 32, which is independent of the shell 1 and is suspendedfrom the tubes 5. This sheet 32 is secured to a pendent-head 33 by meansof a ring 34 and suitable screws and rivets or other devices, thusforming a lower chamber 35, from which all of the tubes 5 start upward.The lower chamber thus constituted is entirely independent of the shell1 and is free to rise and fall as the tubes 5 contract or ex pand. Thechamber 35 is centered in the shell 1 by guide-studs 36 in the form ofsetscrews secured in the outer periphery of the ring 34. and bearingaccurately against the Walls of the shell 1. The material enters thechamber 35 through a pipe connection 37, which is screwed or otherwisesecured in the head 33 and passes through a stuffing-box 38, formed onthe bottom of the shell, thus permitting the pipe 37 also to rise andfall without causing leakage. After rising through the tubes 5 thematerial enters the chamber 31, whence it exits via the side opening 3therein. The steam or other heating medium is admitted at 39 andexhausted at 40, or vice versa.

29 is a vent for the escape of ammonia and other gases from the shell.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-

1. In an apparatus for the purpose described the combination of a shellhaving a compartment at its upper end, a series of pendent tubescommunicating at one end with said compartment, a chamber independent ofthe shell secured to the lower end of said tubes and communicatingtherewith, guides thereon, a stuffing-box in the shell and a pipepassing through said stufi'ing-box and communicating with said chamber,substantially as set forth.

2. In an apparatus for the purpose described the combination of a shellhaving a compartment in one end, tubes communicating at one end withsaid compartment, a chamber or head independent of said shelland communieating with the other ends of said tubes, a stuffing-box in saidshell, a pipe communicat ing with said head and extending through saidstuffing-box, and the guide-studs 36 secured to said head between it andthe walls of the shell, substantially as set forth.

EDWARD G. T. COLLES.

Witnesses:

EDNA B. JOHNSON, F. A. HOPKINS.

